Re: [boost] Boost and clang under Windows

Subject: Re: [boost] Boost and clang under Windows
From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2013-09-29 16:23:26

On Sunday 29 September 2013 21:19:24 Daniel James wrote:
> On 29 September 2013 21:12, Andrey Semashev <andrey.semashev_at_[hidden]> 
wrote:
> > On Sunday 29 September 2013 20:57:56 Daniel James wrote:
> >> On 29 September 2013 19:52, Beman Dawes <bdawes_at_[hidden]> wrote:
> >> > Please do not do that. I had face-to-face meetings this week with
> >> > Chandler
> >> > Carruth
> >> > and others working on Clang for Windows. They are depending on Boost's
> >> > tests to find bugs in Clang's emulation of Visual C++, and if you work
> >> > around their bugs it will deprive them of a valuable testing tool.
> >> 
> >> They should be testing with BOOST_COMPILER_CONFIG set to
> >> "boost/config/compiler/visualc.hpp". That way BOOST_MSVC and the
> >> appropriate compatibility macros will be set for them, but we can
> >> still use BOOST_MSVC to treat Visual C++ differently to clang.
> > 
> > BOOST_MSVC should only be defined for genuine MSVC, not for any
> > pretenders.
> > That's the whole point of this macro.
> 
> Errr, that's what I said. I was suggesting that they could test with
> BOOST_COMPILER_CONFIG set to the Visual C++ header so it will be set
> in *their* tests. For our use BOOST_MSVC wouldn't be set.

I don't understand. Why would they test a known to be incorrect configuration?